X-Git-Url: http://git.nikiroo.be/?p=fanfix.git;a=blobdiff_plain;f=src%2Fbe%2Fnikiroo%2Futils%2Fui%2FListSnapshot.java;fp=src%2Fbe%2Fnikiroo%2Futils%2Fui%2FListSnapshot.java;h=d2e89c86884491996cf75a40056079d5bb03038e;hp=0000000000000000000000000000000000000000;hb=3177622aa63d2e126ce9426b440a3443a2ea8bab;hpb=97654d115d9f0286f9eea9fe50216cb3737e9ed6

diff --git a/src/be/nikiroo/utils/ui/ListSnapshot.java b/src/be/nikiroo/utils/ui/ListSnapshot.java
new file mode 100644
index 0000000..d2e89c8
--- /dev/null
+++ b/src/be/nikiroo/utils/ui/ListSnapshot.java
@@ -0,0 +1,62 @@
+package be.nikiroo.utils.ui;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import javax.swing.JList;
+
+public class ListSnapshot {
+	private JList list;
+	private List<Object> elements = new ArrayList<Object>();
+
+	public ListSnapshot(JList list) {
+		this.list = list;
+
+		for (int index : list.getSelectedIndices()) {
+			elements.add(list.getModel().getElementAt(index));
+		}
+	}
+
+	public void apply() {
+		applyTo(list);
+	}
+
+	public void applyTo(JList list) {
+		List<Integer> indices = new ArrayList<Integer>();
+		for (int i = 0; i < list.getModel().getSize(); i++) {
+			Object newObject = list.getModel().getElementAt(i);
+			for (Object oldObject : elements) {
+				if (isSameElement(oldObject, newObject)) {
+					indices.add(i);
+					break;
+				}
+			}
+		}
+
+		int a[] = new int[indices.size()];
+		for (int i = 0; i < indices.size(); i++) {
+			a[i] = indices.get(i);
+		}
+		list.setSelectedIndices(a);
+	}
+
+	// You can override this
+	protected boolean isSameElement(Object oldElement, Object newElement) {
+		if (oldElement == null || newElement == null)
+			return oldElement == null && newElement == null;
+
+		return oldElement.toString().equals(newElement.toString());
+	}
+
+	@Override
+	public String toString() {
+		StringBuilder builder = new StringBuilder();
+		builder.append("List Snapshot of: ").append(list).append("\n");
+		builder.append("Selected elements:\n");
+		for (Object element : elements) {
+			builder.append("\t").append(element).append("\n");
+		}
+
+		return builder.toString();
+	}
+}